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Basile [38]
2 years ago
15

What's the fastest way to multiply 2 digit numbers up to 100 mentally?

Mathematics
2 answers:
Shalnov [3]2 years ago
8 0

Answer:

This mental multiplication trick uses the idea of a third number - a base number - to help us multiply two numbers in your head. This lesson looks at multiplying numbers near 10 using base 10. Fast Mental Multiplication Trick - Multiply in your head using base 20 and 30 How to multiply numbers near 20 and 30

Hope it helps

olganol [36]2 years ago
6 0

Hi there!

The fastest way to multiply 2 digit numbers up tp 100 is 50.

we can directly divide 100 by 2.

a × b = ab

suppose we replace a with 50 and b with 2

50 × 2 = 100

replace 50 with a again.

a × 2 = 100

a = 100/2

a = 50

100/2 is the fastest way

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A typical lap around a track in the United States has length of 440 yards. How many lap would need to be complete to run a mile?
g100num [7]

4 laps because a mile is 1,760 yards and the 440 laps need to be divided into 1,760 so 1,760/440 is 4 so four laps are needed to complete a mile

3 0
3 years ago
A rabbit started at point 0 and made 3 jumps: a jump of 4 units, then a jump of 2 units, and then a jump of 1 unit. We do not kn
allochka39001 [22]

Answer:

<u>The rabbit could be at eight different numbers of the number line:</u>

<u>-7, - 5, - 3, - 1, 1, 3, 5, and 7.</u>

Step-by-step explanation:

Let's simulate each of the jumps of the rabbit in all the possible directions, as follows:

Option 1: - 4 - 2 - 1 = -7

Option 2: - 4 - 2 + 1 = -5

Option 3: - 4 + 2 - 1 = - 3

Option 4: - 4 + 2 + 1 = - 1

Option 5:  4 - 2 - 1 = 1

Option 6: 4 - 2 + 1 = 3

Option 7: 4 + 2 - 1 = 5

Option 8: 4 + 2 + 1 = 7

7 0
3 years ago
Urgent need assistance
pashok25 [27]
I'm here because you asked for assistance.
3 0
3 years ago
Answer it fast I mean it
Flauer [41]

Answer:

D

Step-by-step explanation:

To compare the two, get the same denominator, so multiply -8/18 by 27 on the numerator and denominator, and multiply -17/27 by 18 on the numerator and denominator. That gives -216 /486 and -306 /486. On a number line, the one on the left is less. That greater than symbol is correct. Both to the left of 0, -8/18 on the right of -17/27.

5 0
3 years ago
Snowy's Snow Cones has a special bubble gum snow cone on sale. The cone is a regular snow cone that has a spherical plece of bub
Aloiza [94]

Draw a diagram to illustrate the problem as shown below.

Calculate the volume of the empty cone.

V₁ = (1/3)π*(6 in)²*(10 in) = 120π in³

Calculate the volume of the sphere.

V₂ = (4/3)π*(1.5 in)³ = 4.5π in³

The volume that can be filled with flavored ice is

V = V₁ - V₂ = 115.5π in³ = 362.85 in³

Answer:

The volume is 115.5π in³ or 362.9 in³ (nearest tenth)

4 0
3 years ago
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